Bug in RootsAndPoles.jl Package?

Recently, I tried the package RootsAndPoles.jl (v2.0.0) with standard parameters as described on github’s readme and tested it with the simple complex f(z)=Log(z) function with the attached result.

The root at z=1 is clear but the log(z) has no pole at z=-1. Is this a bug in the package or do I overlook anything?